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<refentry id="man.dnssec-keyfromlabel">

<refentryinfo>

<date>February 8, 2008</date>

</refentryinfo>

<refmeta>

<refentrytitle><application>dnssec-keyfromlabel</application></refentrytitle>

<manvolnum>8</manvolnum>

<refmiscinfo>BIND9</refmiscinfo>

</refmeta>

<refnamediv>

<refname><application>dnssec-keyfromlabel</application></refname>

<refpurpose>DNSSEC key generation tool</refpurpose>

</refnamediv>

<docinfo>

<copyright>

<year>2008</year>

<year>2010</year>

<year>2012</year>

<holder>Internet Systems Consortium, Inc. ("ISC")</holder>

</copyright>

</docinfo>

<refsynopsisdiv>

<cmdsynopsis>

<command>dnssec-keyfromlabel</command>

<arg choice="req">-a <replaceable class="parameter">algorithm</replaceable></arg>

<arg choice="req">-l <replaceable class="parameter">label</replaceable></arg>

<arg><option>-c <replaceable class="parameter">class</replaceable></option></arg>

<arg><option>-f <replaceable class="parameter">flag</replaceable></option></arg>

<arg><option>-k</option></arg>

<arg><option>-n <replaceable class="parameter">nametype</replaceable></option></arg>

<arg><option>-p <replaceable class="parameter">protocol</replaceable></option></arg>

<arg><option>-t <replaceable class="parameter">type</replaceable></option></arg>

<arg><option>-v <replaceable class="parameter">level</replaceable></option></arg>

<arg choice="req">name</arg>

</cmdsynopsis>

</refsynopsisdiv>

<refsect1>

<title>DESCRIPTION</title>

<para><command>dnssec-keyfromlabel</command>

gets keys with the given label from a crypto hardware and builds

key files for DNSSEC (Secure DNS), as defined in RFC 2535

and RFC 4034.

</para>

</refsect1>

<refsect1>

<title>OPTIONS</title>

<variablelist>

<varlistentry>

<term>-a <replaceable class="parameter">algorithm</replaceable></term>

<listitem>

<para>

Selects the cryptographic algorithm. The value of

<option>algorithm</option> must be one of RSAMD5,

RSASHA1, DSA, NSEC3RSASHA1, NSEC3DSA, RSASHA256,

RSASHA512 or DH (Diffie Hellman).

These values are case insensitive.

</para>

<para>

If no algorithm is specified, then RSASHA1 will be used by

default, unless the <option>-3</option> option is specified,

in which case NSEC3RSASHA1 will be used instead. (If

<option>-3</option> is used and an algorithm is specified,

that algorithm will be checked for compatibility with NSEC3.)

</para>

<para>

Note 1: that for DNSSEC, RSASHA1 is a mandatory to implement

algorithm, and DSA is recommended.

</para>

<para>

Note 2: DH automatically sets the -k flag.

</para>

</listitem>

</varlistentry>

<varlistentry>

<term>-l <replaceable class="parameter">label</replaceable></term>

<listitem>

<para>

Specifies the label of keys in the crypto hardware

(PKCS#11 device).

</para>

</listitem>

</varlistentry>

<varlistentry>

<term>-n <replaceable class="parameter">nametype</replaceable></term>

<listitem>

<para>

Specifies the owner type of the key. The value of

<option>nametype</option> must either be ZONE (for a DNSSEC

zone key (KEY/DNSKEY)), HOST or ENTITY (for a key associated with

a host (KEY)),

USER (for a key associated with a user(KEY)) or OTHER (DNSKEY).

These values are

case insensitive.

</para>

</listitem>

</varlistentry>

<varlistentry>

<term>-c <replaceable class="parameter">class</replaceable></term>

<listitem>

<para>

Indicates that the DNS record containing the key should have

the specified class. If not specified, class IN is used.

</para>

</listitem>

</varlistentry>

<varlistentry>

<term>-f <replaceable class="parameter">flag</replaceable></term>

<listitem>

<para>

Set the specified flag in the flag field of the KEY/DNSKEY record.

The only recognized flag is KSK (Key Signing Key) DNSKEY.

</para>

</listitem>

</varlistentry>

<varlistentry>

<term>-h</term>

<listitem>

<para>

Prints a short summary of the options and arguments to

<command>dnssec-keygen</command>.

</para>

</listitem>

</varlistentry>

<varlistentry>

<term>-k</term>

<listitem>

<para>

Generate KEY records rather than DNSKEY records.

</para>

</listitem>

</varlistentry>

<varlistentry>

<term>-p <replaceable class="parameter">protocol</replaceable></term>

<listitem>

<para>

Sets the protocol value for the generated key. The protocol

is a number between 0 and 255. The default is 3 (DNSSEC).

Other possible values for this argument are listed in

RFC 2535 and its successors.

</para>

</listitem>

</varlistentry>

<varlistentry>

<term>-t <replaceable class="parameter">type</replaceable></term>

<listitem>

<para>

Indicates the use of the key. <option>type</option> must be

one of AUTHCONF, NOAUTHCONF, NOAUTH, or NOCONF. The default

is AUTHCONF. AUTH refers to the ability to authenticate

data, and CONF the ability to encrypt data.

</para>

</listitem>

</varlistentry>

<varlistentry>

<term>-v <replaceable class="parameter">level</replaceable></term>

<listitem>

<para>

Sets the debugging level.

</para>

</listitem>

</varlistentry>

</variablelist>

</refsect1>

<refsect1>

<title>GENERATED KEY FILES</title>

<para>

When <command>dnssec-keyfromlabel</command> completes

successfully,

it prints a string of the form <filename>Knnnn.+aaa+iiiii</filename>

to the standard output. This is an identification string for

the key files it has generated.

</para>

<itemizedlist>

<listitem>

<para><filename>nnnn</filename> is the key name.

</para>

</listitem>

<listitem>

<para><filename>aaa</filename> is the numeric representation

of the

algorithm.

</para>

</listitem>

<listitem>

<para><filename>iiiii</filename> is the key identifier (or

footprint).

</para>

</listitem>

</itemizedlist>

<para><command>dnssec-keyfromlabel</command>

creates two files, with names based

on the printed string. <filename>Knnnn.+aaa+iiiii.key</filename>

contains the public key, and

<filename>Knnnn.+aaa+iiiii.private</filename> contains the

private

key.

</para>

<para>

The <filename>.key</filename> file contains a DNS KEY record

that

can be inserted into a zone file (directly or with a $INCLUDE

statement).

</para>

<para>

The <filename>.private</filename> file contains algorithm

specific

fields. For obvious security reasons, this file does not have

general read permission.

</para>

</refsect1>

<refsect1>

<title>SEE ALSO</title>

<para><citerefentry>

<refentrytitle>dnssec-keygen</refentrytitle><manvolnum>8</manvolnum>

</citerefentry>,

<citerefentry>

<refentrytitle>dnssec-signzone</refentrytitle><manvolnum>8</manvolnum>

</citerefentry>,

<citetitle>BIND 9 Administrator Reference Manual</citetitle>,

<citetitle>RFC 4034</citetitle>.

</para>

</refsect1>

<refsect1>

<title>AUTHOR</title>

<para><corpauthor>Internet Systems Consortium</corpauthor>

</para>

</refsect1>

</refentry><!--